| Value |
Category |
| 0 |
Not given |
| 1 |
|
| 11 |
|
| 17 |
|
| 21 |
|
| 22 |
|
| 29 |
|
| 44 |
Marked on card - no date |
| 66 |
Reported by mother |
| 97 |
Missing |
| Sysmiss |
|
Warning: these figures indicate the number of cases found in the data file. They cannot be interpreted as summary statistics of the population of interest.
